Method for correlating congestion to performance metrics in internet traffic

摘要

For each of a number of network performance metrics, an associated value r_pm that represents a difference between a first correlation coefficient r₁ computed for a baseline data set and a second correlation coefficient r₂ computed for a second data set that includes the baseline data set and other data points classified as duration outliers is computed. The first and second correlation coefficients for each network performance metric represent correlation between that network performance metric and durations of network connections. The network performance metric that has a largest associated r_pm value of all r_pm values computed is selected as representing the probable root cause of the duration outliers.